1201356402397 has 2 divisors, whose sum is σ = 1201356402398. Its totient is φ = 1201356402396.

The previous prime is 1201356402377. The next prime is 1201356402401. The reversal of 1201356402397 is 7932046531021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1138619177721 + 62737224676 = 1067061^2 + 250474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201356402397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201356402377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600678201198 + 600678201199.

It is an arithmetic number, because the mean of its divisors is an integer number (600678201199).

Almost surely, 2^{1201356402397} is an apocalyptic number.

It is an amenable number.

1201356402397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201356402397 is an equidigital number, since it uses as much as digits as its factorization.

1201356402397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 1201356402397 in words is "one trillion, two hundred one billion, three hundred fifty-six million, four hundred two thousand, three hundred ninety-seven".